Remove/install temperature sensor - AR15.60-P-3000TMG

ENGINE 156.982 in MODEL 209.377/477 

ENGINE 156.983 in MODEL 211.077/277, 219.377 

Fig 1: Identifying Temperature Sensor Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  caused by swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof.	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
	Risk of death  caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Switch ignition off, remove ignition key (transmitter key).	On vehicles with code 889 Keyless-Go: Press Keyless-Go start/stop button repeatedly until the ignition is switched off. Remove keyless go transmitter card or transmitter key from vehicle and store outside of transmission range (min. 2 m)
2	Open engine hood	Model 209	AR88.40-P-1000Q
		Model 211	AR88.40-P-1000T
		Model 219	AR88.40-P-1000TX
3	Remove left and right intake air duct
4	Remove front engine cover	Do not tilt front engine cover, but lift upwards vertically otherwise the retaining lugs can break off.
	Only perform steps 5 to 8 on vehicles without code P98 Black Series
5	Detach air hose (3) from air shutoff valves
6	Unclip air hose (3) at expansion reservoir for steering (1) and lay to one side
7	Remove switchover valve (2)		AR14.30-P-7255TS
8	Detach expansion reservoir for steering (1) and place to one side		AR46.25-P-1000GZS
9	Remove poly-V belt (4)		AR13.22-P-1202TMG
10	Remove guide pulley (5) from coolant pump housing		*BA13.25-P-1004-01U
11	Raise vehicle with lifting platform	Model 209	AR00.60-P-1000P
		Model 211	AR00.60-P-1000T
		Model 219	AR00.60-P-1000TX
12	Remove bottom engine compartment paneling	Only install lower engine compartment paneling after leak test.
		Model 209	AR61.20-P-1105P
		Model 211	AR61.20-P-1105T
		Model 219	AR61.20-P-1105TX
13	Drain coolant at radiator		AR20.00-P-1142TMG
	Notes on coolant		AH20.00-N-2080-01A
14	Unlock and disconnect electrical connector (6) on coolant temperature sensor (B11/4)
15	Remove coolant temperature sensor (B11/4) from cylinder head	Replace sealing ring.
			*BA15.60-P-1002-01C
16	Install in the reverse order
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
17	Conduct engine test run and check engine for leaks while it is running